In order to adopt to the broad pressure range of aircraft at high attitude under plasma flow control

based on the classical dielectric barrier discharge plasma actuator（DBDPA） and its discharge in different pressure in stationary atmospheric

we investigated the influences of pressure on the discharge onset voltage

glow pattern

spectral characteristics

V-A characteristics

discharge power

time averaged thrust

and time averaged velocity of induced flow. The results show that

as the air pressure drops from 0.1 MPa to 0.02 MPa

the onset voltage decreases gradually from 6.4 kV to 2.8 kV

the discharge glow becomes brighter and its area becomes wider（from about 2 mm to 15 mm）

and the spectral intensity increases; the line position remains unchanged

the current amplitude and the peak of micro-discharge current pulseincreases; the discharge power increases monotonically and raises steeply below 0.06 MPa

the time averaged velocity of induced flow increases monotonically on the whole

while the time averaged thrust firstly increases and then declines

where a peak-value pressure exists in proportional to the driven voltage

0.04 MPa for 12 kV and 0.06 MPa for16 kV. In addition

both of the two time averaged quantities

thrust and induced velocity

are proportional to the driven voltage and frequency respectively. At a particular low atmosphere pressure

0.05 MPa

the discharge power is proportional to the driven voltage

but increases first and then decreases as the frequency rincreases

where a peak-value frequency of 3.5 kHz exists.